package com.hpf.gulimall.order.config;

import org.springframework.amqp.rabbit.connection.ConnectionFactory;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.amqp.support.converter.Jackson2JsonMessageConverter;
import org.springframework.amqp.support.converter.MessageConverter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;

@Configuration
public class MyRabbitConfig {
    private RabbitTemplate rabbitTemplate;

    @Primary
    @Bean
    public RabbitTemplate rabbitTemplate(ConnectionFactory connectionFactory) {
        RabbitTemplate rabbitTemplate = new RabbitTemplate(connectionFactory);
        this.rabbitTemplate = rabbitTemplate;
        rabbitTemplate.setMessageConverter(messageConverter());
        initRabbitTemplate();
        return rabbitTemplate;
    }

    @Bean
    public MessageConverter messageConverter() {
        return new Jackson2JsonMessageConverter();
    }

    /**
     * 定制RabbitTemplate
     * 1、服务收到消息就会回调
     *      (1)、spring.rabbitmq.publisher-confirms: true
     *      (2)、设置确认回调
     * <p>
     * 2、消息正确抵达队列就会进行回调
     *      (1)、spring.rabbitmq.publisher-returns: true
     *          spring.rabbitmq.template.mandatory: true
     *      (2)、设置确认回调ReturnCallback
     * <p>
     * 3、消费端确认(保证每个消息都被正确消费，此时才可以broker删除这个消息)
     */
    // @PostConstruct  //MyRabbitConfig对象创建完成以后，执行这个方法
    public void initRabbitTemplate() {
        //设置确认回调

        //1、只要消息抵达Broker就ack=true
        rabbitTemplate.setConfirmCallback(
                /*
                 * correlationData：当前消息的唯一关联数据(这个是消息的唯一id)
                 * ack：消息是否成功收到
                 * cause：失败的原因
                 */
                (correlationData, ack, cause) ->
                        System.out.println("confirm...correlationData[" + correlationData + "]" +
                                "==>ack:[" + ack + "]" +
                                "==>cause:[" + cause + "]")
        );

        //2、只要消息没有投递给指定的队列，就触发这个失败回调
        rabbitTemplate.setReturnCallback(
                /*
                 * message：投递失败的消息详细信息
                 * replyCode：回复的状态码
                 * replyText：回复的文本内容
                 * exchange：当时这个消息发给哪个交换机
                 * routingKey：当时这个消息用哪个路邮键
                 */
                (message, replyCode, replyText, exchange, routingKey) ->
                        System.out.println("Fail Message[" + message + "]" +
                                "==>replyCode[" + replyCode + "]" +
                                "==>replyText[" + replyText + "]" +
                                "==>exchange[" + exchange + "]" +
                                "==>routingKey[" + routingKey + "]")
        );
    }
}
